Spyglass cannot see entities that are out of render distance

When looking down the Spyglass it seems that you cannot see entities that are outside of the render distance which I believe defeats the purpose of using the Spyglass as it could be crucial to see entities (players especially) from a large distance in order to figure out a way to approach. Creating a ticking area in also does not solve issue so I'm figuring it's a limitation of the render distance. Is there any way for this to possibly be changed?